19712556

素因数分解:

$2^2\times 3^2\times {\mathrm{521}}^1\times {\mathrm{1051}}^1$

素因数の和:1582

約数の個数: 36

約数和(自身を含む): 49972104

約数和(自身を除く): 30259548

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 521, 1042, 1051, 1563, 2084, 2102, 3126, 3153, 4204, 4689, 6252, 6306, 9378, 9459, 12612, 18756, 18918, 37836, 547571, 1095142, 1642713, 2190284, 3285426, 4928139, 6570852, 9856278, 19712556]

約数ペア:

[(1, 19712556), (2, 9856278), (3, 6570852), (4, 4928139), (6, 3285426), (9, 2190284), (12, 1642713), (18, 1095142), (36, 547571), (521, 37836), (1042, 18918), (1051, 18756), (1563, 12612), (2084, 9459), (2102, 9378), (3126, 6306), (3153, 6252), (4204, 4689)]